This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
This article is retracted at the request of the Editors. Due to errors during the preparation of the manuscript, text from several sources was duplicated, including the dissertation of K. Koskenniemi, “A proteomic view of probiotic Lactobacillus rhamnosus GG” (accessed 24 July 2019 from https://helda.helsinki.fi/bitstream/handle/10138/28625/aproteom.pdf?sequence=1) and J Aires and M-J Butel, Proteomics, human gut microbiota and probiotics. Expert Review of Proteomics 2014; 8:279–288, DOI: 10.1586/epr.11.5
GK Agrawal and R Rakwal were not involved in the initial drafting of the manuscript. The remaining authors do not agree with the decision to retract, but take responsibility for the error.